Your post isn't really very clear.
What exactly do you mean by "sign in"?
Sign into what?
If she can't make calls does she have a connection to the 48 network?
Does she have an active membership plan to allow her to use services?
Did it ever work?
Is the phone unlocked for use on any network?
If you need to contact 48 support about this then see the link in my signature below or email them at support@48months.zendesk.com
